Historically, the lower reaches of the Minjiang River were divided into nine jiang (流) or "sub-river systems", one of which was the Beihai River (北海江), after which the town is named. This waterway supports flood control and irrigation, historically vital to local agriculture.

Tue, 05 May 2026 13:23:31 +0000

Historical Significance of the Minjiang River’s Lower Reaches: The Role of the Beihai Jiang in Agricultural Sustainability The Minjiang River, one of the most vital waterways in Sichuan Province, China, has shaped the region’s landscape and livelihoods for centuries. Flowing through the scenic upper reaches of the Yangtze River system, its lower reaches are historically structured into nine jiang (流)—distinct sub-river systems—each playing a crucial role in supporting agriculture, flood management, and local communities. Among these, the Beihai Jiang (北海江) occupies a particularly important position, both geographically and culturally, and remains a defining feature of the region’s identity today. ### The Nine Jiang of the Minjiang River The division of the Minjiang River into nine jiang reflects a sophisticated understanding of hydrology and regional planning developed over generations. Each jiang corresponds to a major tributary or reach, facilitating precise water management and enhancing navigability. This system allowed farmers and administrators to regulate water flow efficiently, distributing resources to irrigate rice paddies, citrus groves, and other crops that sustained the local economy.